Machine for rolling disks



Nov. 16 1926. 1,606,905

J. W. SMITH MACHINE FOR ROLLING DIsKs Filed Oct. 5, 1920 5 Sheets-Sheet 1 I 100 106 57 'f 7 101 f 7M l i I :L f l 1;)5 l /70 lICz I. 95

50-1 'ZEN i l 33 55' a9 77 l l 50 $0 I l I l f l 89/ Z' :1 96'- I). u :l V O h 'l y". I j@- 91 -66 6- 'p- 625- 17a 5g, 65 65- d o 7 9g im 5; .l p 67 f j 1,20 122 117 d, f 1, 115 92 f.: .r -M 116 125 11:; 67 H 55 55mql: n "HMO 57; im 96 y F0 3 152 L :19 l iz 25 I WTNESSES: NVENTOR.'

7i l l Jiz/H/l/V821143477/7 ma jm# p- AT ORNEY5.

Nov. 16 1926. 1,606,905

- J. w. SMITHl MACHINE FOR ROLLING DISKS 5, 1920 5 Sheets-Sheet 2 w/TNEssEs; /NvE/vToR;

J'ohzz M Smiiiv,

- A TTORNEYS.

Nov. 10 192e. 1,606,905

J. W. SMITH MACHINE FOR ROLLING DISKS F" d 0 t. 1920 56 5 Sheets Sheet 5 WIT/755553.-

/NvE/vTof.- John, Mismii,

Nov. 16 1926.

J. W. SMITH MACHINE FOR ROLLING DISKS Filed oct. 5, 1920 5 Sheets-Sheet `4 A TOR/VEYS.

J. W. SMITH MACHINE FOR ROLLING DISKS Nov. 1 6 1926.

F d ct. 1920 SSheets-Sheet HG'; LIL

A TTORNEYS.

" a front elevation Patented Nov. i6, i926..

JOHN W. SMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO BUDD WHEEL COMPANY, F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

MACHINE FOR ROLLING DISKS.

Appncatiiea october 5, 1920. serial No. 414,848.

My invention relates to machines for rolle ing disks, and more especially to the rolling of disks of'tapered cross-section. In accordance with my invention, a disk of such cross-section may be rolled from a blank initially of uniform thickness Without causing buckling or other injurious deformation; and the operations can b ecarried on expeditiously and, to a large. extent, automatically. Various other advantages obtainable through my invention willappear from the description hereinafter of the Abest embodiment at presenti knownfgto gne; oits,

scope and essentials, in its various' phases and aspects, will 'be indicated 1n my.cla1m*s.

-Infthe accompanying drawings,' 1fig, I.l isg= of a. machine yembodying myy invention.l

Fig. II'r is an. endif-elevation; of

2@ lviewed lfrom therightcf Fig. I. u

- .'Fig. YV "is afsectional4 view of a ,valve ,by

i y which certain operations ofythe machineare4 controlled.

Figs. andVII eare`v respectively al plany; and a: cossfsectionalfview of a sheetmetall ation. y v Fig. section, showing, the 'relative positions ofthe l"rollingyelements, and the blank Y operated 1 upon during the rollingprocesaand v FigIXy 'sf-across4sectiona1 view ofthe *finished product. f

blankasit appears-.before the rolling v.opere- 1 The s tructure-ihereinnshown comprises al 40 circular table 1 which serves as a..supportfor` f the blankswhich are-tobe rolled, and a pair*` f of ,cooperatingfconical rolls 2 2; having a comparatively narrow cy'flindrica-l tread and adapted lto bey moved radially outward vfrom the center Aof thetable -`1A in oppositedirecblank.

tions While vin :pressure: contact withthe The necessary Lpressurelof these lcooperat-` ing elements on the yblank is maintained dur# l 'ing the rolling 4operation by suitable. mechanism which ;wil1 be later described. The support and rolls'Q- are bodily rotatable rel- Atjts centre,ftliefdief.plat` V l standing tapered vstud, 9,' adapted:tolit1 ...trai orifice in theblankfandp'osit' Fig. jIIIis acentralverticalsection ofthe andvhold. the lltt lffbll .d SP I"i machine, l .'e i'4 f ";Fg. IVis an' enlargedfragmentary ,sec-1. tonal elevation, showing the.cooperative? ele- 5 2.50 ments by, which the rolling is accomplished.

. fine the rolling, fepeijfatiq ,0f the, machines (Seid 'raie/SS l-lubricationg'of.Y ef] 'apron 1 3, .tends elubricant fromft efre'ces 11 inte Ifcepis anyA leakageyvlrich I 1 Q o'during rotationoftheftab'le. VIII is adetaiIwiew, ypartlyI in crossative to one another, and also movable toward and away from one another.

The table 1 has a removable top or die 55 plate 3 which is of arched cross-sectional oonguration, as clearly shown in Figs. III and IV. The upper surface -of the element 3 is conically concave, and hence slopes downward from its periphery ltoward yits axis asindicated at This slope determines the degree of attenuation in and the -Y taper of theiinished disk, as is explained hereinafter. The removable die plate 3` rests upon a rotatable supportv 5, and is heldf in proper axial alignment ,therewith fen-Q bottom. recess withv anj anfnula'rV ridge Y oni the support; `1t,islsjecliredin placeQbyE/bo-ll ,8., ef-'3, h'asffan` membery is sust l housed. 111 e. Qentralfrleess 11' base `12, and has jmtacheditd its llower end' jaadrive shaft 19"journalledfinf" a`rein"ovablef baringframe 20:, anche, mounted an appropriate opening infthe basef12fjfThe Y gears `17 and 18 run'in' agrease` filled inner'.

chamber 21offthejbase, ,whiclrchamberu isl 95 circulating system. This system comprises a pipe 24 extending axially through the tubular shank 15 offthe support 5 and discharging into the hollowl of the die plate 3. A stationary cross piece 25-attached`to` the upper end of the pipe within the hollow of the die plate tends to prevent swirling of the cooling medium duringrotation of the table.y

:The discharge drains downward through the duct of the shank around the pipe 24 into A a chambered fitting l26 secured to the diaphragm 22 previously referred to, and is nally caried 0E througho a pipe 27. A tubular extension piece 28 forming a prolongation of the axial duct in the shank 15 runs within a stufling box 29. This construction, it will readily be seen, affords a seal between the grease chamber 21, and

the water circulatory system.

Rising from the base 12 are upright col umns or shafts 30-30 and 31-31 which are united at their upper' ends in p'airsbybridging cross pieces -.32-32. A frame 33 with guide sleeves 34 embracing the columns 30-430 and 31-31 is adapted to slide vertically under guidance of the columns. Down- Ward movement of the frame 33 is limited by the engagement ofl cylindrical extensions 35 of its guide sleeves 34 withadjustable collars 36 setuponthe threaded portions 37 of the columns, and the upward movement of said frame is similarly limited by adjust" able stop collars 38. The adjustment of the collars 36 adapts .the machine to operating upon blanks of different initial thickness- The rolls 2-2-already referred to are journalled in carriages 40-40 whichare mount ed for horizontal sliding movement in acorn# mon guideway 41, formed inthe lower partl of the slidelframe 33. From' Fig. II, it will be seen thatlthe centre of'ithe carriage guide'- I way 41 intersects the axis of rotation' of-the turn table 1,"so that, in being shifted outward in opposite directionsfunder guidance.V of the slidewayftherolls are moved radially cross-wise of the top of the turn table, as

previously mentioned. Each of the Arolls 2 (see Fig. IV) is fixed upon a shaft 42 which is journalled in roller bearings 43 and 44 housed inappropriate cavities ofthe integral 'bracket arms of thecarriage 40. In addition to the bearings 43 and 44, double ball bearings 45 are provided for resisting the outward thrust of the rolls 2, 2. The cavities for the several bearings are kept filled withV grease for lubricating purposes, in a'manner valready well understood.

In order to provide for carrying off heat from the rolls 2,- 2 each Jf said rolls is made hollow, as best shown in Fig. I V so that water or other cooling medium may be circulated therethrough. The cooling medium is conducted to each roll through a tube 46 axially disposed within the bore of the corresponding shaft 42. This tube 46 extends inward to point adjacent the inner end of the shaft, and the bore of the latter is there .portion 53 of the shaft bore, which, in turn,

discharges through orifices Vin la retaining collar 54 into a collecting chamber 1n an extension 55 of the roll carriage 40. The drain-` age from the extension 55 may be conducted to any convenient point for disposal through a pipe shown'at 56. The supply of the cooling medium may be delivered, for example, lby a flexible conduit (not shown) attachable to a nipple 57 set into a projecting boss 58 'on the extension 55,-this nipple communicating with the protruding end of the tube 46. which at this point lies ina stuiiing box.

In order that the shifting ofl the rolls in opposite directions may be effected gradually and uniformly, they are shifted by common actuating means including a pair tof rockers 65-65 fulcrumed on the frame 33 at 66-'-66 and connected by adjustable links 67'-67 to the roll carriages 40-40, and by vtoggle links 68-68 to the lower end of a .movable hydraulic cylinder 70. The piston 71 of the cylinder 70 is supported by a superstructu-re72.1nounted.upon a central boss on theframe 3 3. The piston 71, is of differential double-acting type, and has a head adapted to be acted upon by a suitable pressure medium both above and beneath. A

`continuous supply ofpressure fluid is conducted through a pipe -74 and port 75 to the space 76 above ,the piston head; this tends to keep the cylinder raised and the rolls 2- -2 in their innermost or starting position. When 'the rolls are to be gradually separated during the rolling operation. fluid under pressure from a'pipe 77 is admitted t'o the space 78 beneath the'piston head. The work ing" pressure of the actuating fiuid being equal throughout the system, theV return stroke of the cylinder 70 that brings the rolls 2. 2 together will occur in a shorter time than the out 'stroke that forces them apart, because the displacement at the top face of the piston head is less than that at its bot-- tom or inner face. In practice, the ratio 'between the effective areas of the piston faces is made one to eight, so that the'return stroke of the cylinder is effected in approximately one eighth of the time required for its out or working stroke. As a result of this arrangement, therefore, the rolls 2-2` are slow- The.I

ly and gradually shifted during the working stroke while their return is much more quickly accomplished, so as to avoid loss of time between successive operations. Obviously the time required for these movements may be readily varied by varying the relative rates of pumping that produce them.

The movements of the frame 33 together with its various appendages is brought about (in a manner similar to that described above in connection with the movement of the rolls 2 2) by movable cylinders 80-80 secured to the frame centrally between the upright guide columns 30-30-and 31-31. The. pistons 81-81 of these cylinders are suspended centrally from the bridging pieces, 32-32 by means of tie-bolts 82-82 which extend through said bridging pieces and are threaded into bosses on the upper ends of the pistons. As in the case of cylinder- 70, pressure is constantly maintained in the space 83 above the piston head 84 in each of said cylinders, through a port 85 and supply pipe 86. Downward movement of the frame 33 is effected by admitting the pressure fluid through pipe 87 to the 'spaces beneath. the heads 84 of the pistons 81-81. The ratio of the areas of the oppositely acting piston surfaces is, in this instance, preferably made the same as in the case of the piston 71 of cylinder 70. Any leakage from the cylinders 70, 80, 80, is carried off by pipes 88 which telescope within branches 89 of a common connecting pipe 90 which leads to a discharge main 91, as best `shown in Figs. I and IH.

The pressure fluid is pumped to the cylinder by means of a suitable force pump diagrammatically represented at 92 in Fig. I, and by a separate pump 93 of similardesign to the cylinders 80-80. These pumps are, in the present instance, shown as associated with respective storage or collecting tanks 94 and 95 for the pressure medium, (preferably oil), thus adapting the pressure systems for closed circuit operation without waste of the medium. The pumps 92 and 93 are driven by a common vertical shaft, 96 whose lower end extends into a housing 97 (mounted on the base structure 12) and carries a mitre gear 98 that meshes with a similar gear 99 on the drive shaft 19 hereinb'e- Yfore referred to. The pressure fluid supply pipes 86 for the upper ends of the cylinders 80 are connected to a pipe 100-which is supplied directly'from the pump 93 by a main conduit 101. The other supply pipes 87'for these cylinders 80-80 are'joined by a pipe ing from a controlling valve 104 which communicates with the pump 93 through a pipe 105. An exhaust connection 106 `leads from the valve to the storage tank 95.

Pausing for a moment to refer to the detailed showing of the valve 104 in Fig. V, it

102 and connected to a conduit 103 extendthe lowering of the frame, as already ex` plained.

The valve 104 is operable manually to bring about the descent of the frame 33, by means of a hand lever 110 fulcrumed at 111 to said frame, see Fig. I. The motion of the lever is imparted to the valve stem -through links 112 and 113 whose adjacent ends are coupled bya bell crank lever 114. Shifting of the valve to e'ect elevation of the frame at the end of the rolling operation is, however, accomplished automatically, under control of the/separation of the support 1 and the rolls 2, 2, through the instrumentality of an adjustable stop screw115 carried by the right hand roll carriage 40, (see Fig. III). As the roll carriage reaches the desired outermost limit of its movement, the stop 115 (see Fig. 1) engages the projecting finger end 116 of a lever 117 pivoted to the frame 33 at 118 and connected to the link 112 at 119.

The constant pressure supply to the 'space 76 above the piston head in cylinder 70 is delivered to the pipe 74 from a main 120 connected to the pump 92. The supply pipe 77 of the cylinder 70 leads from a controlling valve 121, which is precisely of the same construction as the valve 104 already described. A. pipe 122 serves to connect the valve 121to the main 120 from the pump, andthe discharge from the valve is returned to the storage reservoir 94 through a pipe connection 123. Thefvalve 121 is manually shiftable to bring about the outward (downward) or working stroke of the cylinder 70 .by a hand lever 125..vvhich is fulcrumed at 126 to theA frame 33 and connected to the stem of the valve through'an interposed link 127., -The reverse shifting of the valve 121 to bring about the return strke is effected automatically through a bell crank lever 128 pivoted on t-he` frame 33, and having one of its arms in engagement with a projecting lug or stud on the link. During the raising of the frame 33; the otherarm of thev bell crank 128 is engaged by a pin 129 fixed to the upright or column 31 at the right of Fig. I, and projectingthrough an elongated vcrtical slot 130 in the guide sleeve 131 of said frame. A

During the rolling operation, the blanks are held to the turn table 1, in the manner best illustrated in Fig. IV. Here the blank represented at B is shown in proper position upon the turn table with the stud 9 proi i jecting through its central aperture to prevent displacement under the action of the" rolls. Rotation of the blank with respect to the turn table is prevented by a presser-rod 132 whose axis coincides with that 'of the turn table 1 and which is carried by the frame 33, as clearly shown in the illustration. The lower end of the presser rod 132 is headed as indicated at 133, and also'socketed to receive the stud 9 so that the blank may be securely held between said head vand the top of the turn table. To the upper end of the rod 132 is secured a bearing cup 135 whose integral depending sleeve 136 is journalled for rotation in the hub of a cup-like fitting 137, removably secured to the frame 33 and affording clearance for axial movement of said bearing cut. The recess of the fitting 137 is closed at the top by a cap piece 138 having a hollow axialbffset 139 for the reception and guidance of a vertically shiftable cylindrical shell 140 which is urged downward by a helical compression spring 141. A ball bearing 142 housed within the cup 135 serves to facilitate free rotation of the presser rod 132 with the turn table. When the frame 33 is raised with respect to the table 1, the extent of outward shiftingof the rod 132 is limited by the engagement of the bottom of the bearing cup 135 with the floor of the recess in the fitting 137.

The operation of the machine may be brieiiy described as follows:

The blanks B operated on are preferablyy circular in form, las illustrated in Figs. VI

- and VII, and initially of a size'somewhat smaller in diameter than that desired for the finished blank; such blanks may readily be cnt or stamped from stock of uniform thickness. blank B may be preheated to facilitate the flow of the metal during the rolling `operation. The frame 33 being raised to the full extent determined by the engagement with the stop collars 38 upon the columns 30, 31, the rolls 2, 2, (in their innermost position, as shown in' the illustration) are thereby sufficiently raised to ermit the easy of the blank B over tlle stud 9 upon t e turn table .1. After the blank has been placed upon the turn table, the hand lever.110 is pulled outward tothe position shown in Fig. I, thereby shifting the piston of the valve 104 upward and admitting pressure fluid to the, space beneath the heads 84 of the pistons 81. This causes the cylinders 80, 80 vto be forced downward so as to move the frame 33 and its appendages toward the table 1 as 5 far as permitted by the limiting stop collars 36 on the columns y30, 31',J In the course of the downward movement of the frame 33,

the scketed end of the presser' rod'132 automatically slips over the stud9 and holds the blank B securely against rotation on the die face 4in the top of the plate 3 of the turn i. ,table- During this downward movement of the frame 33, the spring 141 yields sufficient- Preparatory to being rolled, each' placing' ly to insure adequate pressure of the rod 132 on the blank B by the time the rolls 2, 2 bear firmly on the blank. As soon as the rolls 2, 2 are brought into contact with the blank, they begin to rotate by friction therewith, owing to the rotation of the turn table'.

After the'frame 33 has thus been lowered to the full extent, the operator pulls the hand lever 125 to the position shown in Fig. I, thereby shifting the piston of the valve 121 to admit pressure fluid through the pipe 77 to the space beneath the piston head in the cylinder 70, thus overcoming the constant pressure above, and causing gradual downward movement of said cylinder. This motion is transmitted through the rockers.

and the resultant attenuation of the disk are due to the concavity of the `upper surface of the .element 3, as indicated in Fig. VIII. The result of this action is shown in Fig.

VIII where it will be seen that the' metal of the blank is displaced andworked outward by the cooperation of the inclined die surface of the plate 3 with the. rolls 2, and flows toward,the periphery of the blank. yThe peripheral curl or flare resulting from the natural dishing of the blank under the pressure of the rolls 2, 2 is held in check by the bevel faces of the latter so as to avoid the formation of a sharp angle such as might result in fracture of the metal under the strain. These faces also have a metal spinning action on the peripheral fiare which draws the metal of such Haring iange and causes it to flow radially of the blank. The operation proceeds in this manner until the blank has been completely rolled into a disk of tapered cross sectional configuration, as represented inl Fig. IX. It will be apparent that on account of the comparatively narrow. I

difference being indicated by comparison of -f-Figs. VII and IX.

f After the rolls have been separated to the extent necessary to effect the formation of the disk, the stop screw onthe right hand roll carriage 14() (Fig. I) engages finger 116 ofthe arm 117. vThis causes the reverse shifting of the piston of the valve 104 thereby 'breaking theI communication between cylinders 80. The constant pressure in the space 83 above the heads 84 of the pistons 81 thereupon becomes effective to raise the cyl-- inders 80, together with the frame 33, to which they are attached, and separate the support 1 and the rolls 2, 2. As the frame nears the end of itsl upward movement, the fixed pin 129 on the column 31 on the right of Fig. I engages the bell crank'128, thereby causing the reverse shifting of the piston of 4valve 121, and the exhaust of the pressure fluid from beneath the larger head of the p iston 71 of the vertically acting hydraulic cylinder 70. This release allows the constant pressure on the smaller head of said piston 'to become effective and raise the cylinder 70, which causes the return or bringing together of the rolls 2, 2, to the initial or starting position. Thereupon the machine is again in readiness 'for the next operation. The return strokes of the cylinders and 80, 80 'are accomplished in avcomparatively short interval, so as to avoid loss of time between successive operations of the machine. The machine is therefore, semi-automatic in operation, requiring attention only when the process is initiated and automatically returning to starting condition after its completion. each time.

VIn view of the arrangement of the levers 110 and 125 in close proximity to each other, the operator may, if desired, operate both levers simultaneously, thereby initiating a complete automatic cycle which will be carried out with further attention on his part.

This machine is useful for the rolling of tapered disks, or disks of varying cross section, from a Asheet metal blank of uniform thickness. The cross section of the rolled disk-will be determined by the contour given the die face of the plate 3, on which the blank is supported. This machine may also be used for rolling tapered disks or disks of 'varying cross sect-ion for @le purpose of causing a metal flow to improve the surfaceof the disk. I llave found that, if disks which have been previously'tapered by other methods arel rolled cold 4in my' machine, the

` resulting flow of metal produces a surface been reduced in thickness.

which is very well adapted for receiving paint or enamel. In the machine illustrated in this application, the rolls are fed radially of the blank until the periphery of the blank is reached but the rolls may be stopped and the roll frame lifted before the rolls reach the periphery of the blank, thus leaving a peripheral flange on the disk which has not This is desirable in some instances.

The machine illustrated in the accompanying specification and covered by the claims hereof is an improvement on the apparatus described and claimed in my cof pending application for process of and apparatus for rolling metallic disks, Serial No. 408,231, filed September 4, 1920, and the process vdescribed and claimed in said ap-l plication may be 'carried out by the machine disclosed herein. l

l am aware that the particular machine illustrated and described in this specifica-tion is capable of considerable modiiication and variation without .departing from the spirit of myinvention and, therefore, I claim my invention broadly, as indicated by the appended claims.

Having thus described my invention I claim:

1. A machine of the class described comprising a support for the blank to be rolled and a roll frame relatively movable toward or awayV from one another; a roll on said frame for cooperating with the said sup? port movable crosswise of the blank during therolling operation; and hydraulic means for relatively moving said frame and said support asaforesaid, and `for moving said roll as aforesaid. t

2. A machine of the class described comprising a support for the blank to be rolled and a roll frame relatively movable toward or away from one another; a roll on said frame for cooperating with the said support movable crosswise of the blank during the rolling operation; and dilferential'means for relatively moving'said frame and said support as aforesaid, andfor moving said roll as aforesaid.

3. A machine of the class described comprising a support for the blank to be rolled and a roll frame relatively movable toward or away from one another; a roll on said frame for cooperating with the said support movable crosswise of the blank during the rolling operation; hydraulic means for moving said` frame toward'V said support; andV vertically', acting hydraulic cylinder '.for l moving said roll as aforesaid.

5. A machine of the class described com prising a support for the blank to be rolled` and a cooperating roll;'hydraulic means for maintaining a working pressure between said roll and said support; and means for progressively shifting said roll crosswise of said support during the rolling operation at an inclination relatively to the support to l produce a variation in thickness of the product. '4

A machine of the class described comprising a support for the blank to be rolled and a cooperating roll; means for maintain- V ing a working pressure between said roll prising a support for the blank to be rolled;

y so

a roll cooperating with said support; a hydraulic cylinder for maintaining the working pressure .between said roll and support during the rolling operation; and means for automatically releasing pressure fluid from said cylinder after the completion of the operation to permit removal of the .rolled blank 8. A machine of the class described comprising a support for the blank to be rolled; a shiftable roll cooperating with said support; a hydraulic cylinder for applying pressure between said roll and the support during the rolling operation; and controlling means associated with said cylinder automatically actuated by the roll at the completionl of the rolling operation to release the pressure fluid from the cylinder and permit removal of the rolled blank. l

9. A machine of the class described comprising a support for the blank to be rolled; a cooperating roll adapted to be moved crosswise of the support in contact with the blank; means for maintaining a working pressure between the roll and the support during the rolling operation; and means for automatically separating said roll and sup- .1 port and restoring the same to starting position after the completion of each rolling operation. c

l0. A machine of the class described comprsing a support for the blank to be rolled; a cooperating roll, and means for slowly shifting the roll crosswise of the support while in contact with the supported blank to roll the latter, and for quickly returning the roll automatically'to its initial or startlng position after the rolling operation.

11. A machine of the class described comprising a support for the blank to be rolled; a cooperating roll; and a differential Ahydraulic cylinder for slowly shifting the roll crosswise of the blank while in contact with the same during the rolling operation, and

' for quickly returning the /roll to its -initial or starting position after the rolling f operation.

12. A machine of the class described comprising a support for the blank to be rolled; a cooperating roll; means for moving the roll into contact with the blank and so maintainingthe same; means for shifting the' roll crosswise of the blank during the rolling operation; and means for automatically causing the raising of the Vroll from the blank after the completion of the rolling prising a support for the blank to be rolled;

a cooperating roll; a double acting hydraulic cylinder for moving the roll bodily with.

respect to said support; a second double acting hydraulic cylinder for shifting the roll in a direction crosswise of the/support; separate controlling valves for the sai-d cylinders; means whereby said valves maybe manually operated to bring aboutthe relative movement of thev support and roll to active positions; and means for automatically operating said valves successively so as to first cause the retraction of the roll with respect to the support, and then the restoration of the roll to its initial or starting position, after the completion of the 'rolling operation.

14. A machine of the class described comprising a support' tor the blank sto be rolled; a cooperating roll; a double acting hydraulic roll for moving the cylinder bodily toward or away from said support; a second double acting hydraulic cylinder for shifting the roll in a direction crosswise of the support; a separate controlling valve associatedvwith each cylinder; means for causing the actuation of the valve associated with the first mentioned cylinder to bring about the retraction of the` roll when the latter has reached the end of its activemovement, and means for actuating the valve associated with the second mentioned toration ,of the' vroll to its initial or starting position. Y l

15. In a machine of the class described, the combination of a support for the blank to be rolled and a cooperating roll; a frame with ways for movement of said roll crosswise of the support to roll a blank thereon,

said support and said frame being vertically movable toward and away from one another or rolling and to permit removal of the rolled blank; and means for shifting said roll crosswise of the support on said .f wayscomprising a vertically acting hydrauhydraulic cylinder to bring about the re'sblank; means for centering the blank with reference to said support and said roll; and means controlled by relative movement of said support and said roll toward and away from one another for vholding the work on said support against rotation.

' 17. A machine of the class described comprising a support Jfor the blank to be rolled .the blank,

and a roll carrying frame relatively movable toward and away from each other; a pair of rolls carrie-d by the frame, one located at each side of the center of the blank; means for imparting relative movement to the frame and supportV and for urging them together under pressure; anda iiuid pressure means for moving the rolls oppositely and' radially of the blank in a progressive manner while operating on the same to continually effect changes of'form therein.

18. A machine of the class describedcomprising a rotating support for the blank, a roll carrier movable toward and .from said support, rolls carried by said carrier and cooperating with the blank, means for moving said carrier toward the support to apply the rolls to the blank under pressure, and means for moving the rolls radially of the blank. j

19. A machine of the class described com. prising a rotating support for the blank, a roll cooperating with said support, means for approaching said roll and the support to apply pressure to the blank, means for mov` ing the roll radially of the blank, and means for automatically separating the roll and the blank when the roll reachesY a predetermined point in its radial movement.

20. A machine of the class described comprising a rotating support for the blank, a roll cooperating with lsaid support, means for moving said roll toward thesupport to apply it to the blank under pressure', means for moving the roll radially of the blank, and automatic means for moving the roll away from the blank and returning it radially to starting position to,Y permitl a.

change of blanks on the support.

21. The method of rolling tapered disks comprising clamping a heated circular blank of metal on the ldished or formed surface of a rotating platen, thenforcibly projecting against the free surface of said blank near the central .portions thereof one or more narrow faced curved edge rolls, then traversing said rolls over said blank "to or toward the periphery thereof, the traverse of said rolls being in a plane at substantially right angles to the axis of the rotation of said platen.

22. The method of rolling a Kdisk which `consists in heating a' blank, clamping the same securely on -a rotating platen, and traversing ,the blank outwardly from the center by a pair ofrolls forcibly engaging thereby expanding or shaping .it as desired. g

.23. The method of rolling a disk which comprises heating ajblank, firmly clamping the central portion thereofl on a rotating platen shaped to conform tothe desired sec- 'tion of the disk, .bringing therotating blank into contact with a pair of rolls having their axesjn alignment and on opposite sides Vof 'the axis of the platen, and. retracting thc rolls outwardly from the center of the blank, thereby causing the rolls to traversethe blank so as to expand and shape it as desired.

24. A disk rolling machine comprising a rotatable platen, the exposed surface of which is dished or formed to the shape of one side of a finished disk, centrally located clamping means associated therewith, one or more narrow faced rolls with their pe-y ripheries adjacent said platen, means for projecting said rolls toward and from said platen, and for traversing same toward and fromthe periphery thereof.

25. A disk rolling machine comprising a rotatable platen, means for centrally clamping a blank thereon, one or more rolls provi ed with means for projecting them forcibly against and for traversing nthem over said blank, whereby said blank is rolled to greater diameter.

26. A disk rolling machine comprising a rotatable platen,'means forl centrally clamping' a blank thereon, one or more narrow faced rolls provided with means for pro@ jecting them forcibly against and for traversing them over said blank, whereby the,

blank is vrolled to a greater diameter.

27. Adisk'lrolling machine comprising a rotatable platen, means for centrally clamping la blank thereon, one vor more narrow' faced curved edge rolls provided with meansy for projecting them forcibly'against and for traversing` them over said blank, whereby the blank is rolled to a greater diameter.

f28. A disk rolling machine comprising a l rotatable platen, having a dished or tapered 'working surface, means for centrally clamp-v l ing a blank thereon, one'or more rolls provided with means for projecting them `forci blyI against and for traversingY them over said blank, whereby said blank is rolled to a greater diameter.

29. A disk rolling machine comprising 'a rotatable platen, means for centrally clamping a blank thereon, Vone or morenarrow faced curved edge rolls provided with means for projecting them forcibly against and for traversingthem over said blank, whereby the blank is curled away from said platen.`

for rolling and to permit the removal of working surface,means,for centrally clampvframe for cooperating with said sup the rolled blank, means for centering the and means for simultaneously operating said blank with reference. to said support and said roll, and yielding means controlled by relative-movement of said support and said roll toward and away from one another for holding the work on said support against relative rotation. i

32. In a machine of the class described,

the combination of a support for the blank 10to be rolled and a co-operating roll bodily rotatable relative to one another and bodily movable toward and away ifrom one another for rolling and to permit the removal of the .rolled blank, means for centering the blank withl reference to said support and saidroll,

and rotatable clamping means for holding the Work on' the support against relative rotation which means is controlled -in both its clamping and rotationV by the relative movement of said support and said roll toward and .from one another.

33. A machine of the character described, a rotatable platen to support the blank dis. posed in a horizontal plane, and a relatively movable overhead roll support, guide-Ways on the under side of said support symmetrically disposed on opposite sides of the platen axis and a roll or rolls supported slidably on said guide-ways.

34. A machine of the class described comprising a support for a blank to be rolled and a roll frame relatively I:movable toward and away from one another, a roll on said frame forv cooperating with said support v 36 movable substantially radially of the blank during the rolling operation, and aprime= mover carried by said roll frame for so moving said roll relative to the blank.

35. A machine of the class described comw prising asupport for a blank to be rolled and a roll frame relatively movable toward and away from one another, a rollon said movable substantially radially of the ank '.v i 4 5 'during the rolling operation, a plurality of l columns for supporting said frame, and a prime mover also supported bysaid columns for'relatively moving said frameand support as aforesaid,

36. A machine of the class described comprising a rotatable support Lfor a blank to be rolled, a roll frame relatively movable toward and away. from the support, a pair Vof roll carriages'slidably mounted on said frame 4so as to move transversely of the direction of the relative movement of said frame and said support, a'pair of bell crank levers, one pivoted to each vof said carriages,

ort v levers,-as and for the purpose specified.

37. A machine of the class described compris-ing a rotating table adapted to support a blank to be rolled, a frame relatively vertically movable with respect to said table, a roll carried by said iframe and adapted to operate on a blank supported on said table, and mechanism carried by said frame for causing said relativevertical movement of frame and table and for relatively mov-A ing the roll and table radially of the blank supported by the table.

3S. A machine of the class described comprising a supporty for the blank to be rolled and a cooperating roll, means for causing a relative movement between the support and the roll to bring the roll into Contact with the blank and so maintaining the same, means for relatively shifting the roll and support to cause the roll to radially traverse the blank and means for automatically returning the roll to the starting position after the roll has reached a predetermined point in its traversing movement.

39. A machine of the class described comprising a support for a blank to be rolled and-a cooperating roll, means for causing a relative movement between the support andthe roll to bring the roll into contact with the blank, means for relatively radially traversing the roll with respect to the support while in rolling engagement with the blank, means for separating the roll and the blank, lmeans for retraversing the roll to the starting potion to complete the cycle of movements and manually controllable means for instituting the complete cycle of movements.

40. A machine of the class described comprising a support for a blank to be rolled and a cooperating roll, means for causing a relative movementbetween the roll and the support to bring the roll into contact with the blank, means for relatively moving the roll and the support to cause the roll 'the roll initiates the separation movement and the separation movement initiates the retraverse movement. v 4

In -testimony whereof, I have hereunto signed my name at Philadelphia, Pennsyl vania, this first day of October, 1920.

4JOHN w. s'MiTH. 

